Adjuastable binder for leaves or sheets.



No. 773,225. PATENTED OUT. 25, 1904. I. E. ROBINSON. ADJUSTABLE BINDER FOB. LEAVES 0R SHEETS.

APPLICATION FILED MAB. 8. 1900. RENEWED FEB. 6, 1904. N0 MODEL. ZBEEETS-SHEET 1.

INVENTOR PATENTED OCT. 25, 1904.

P. E. ROBINSON. ADJUSTABLE BINDER FOR LEAVES 0R SHEETS.

APPLICATION FILED MAR. 8. 1900. REDEWED FEB. 6, 1904.

N0 MODEL.

INVENTOR WITNESSES ATTO UNITED STATES Patented October 25, 1904.

FRANK E. ROBINSON, OF NEW YORK, N. Y.

ADJUSTABLE BINDER FOR LEAVES OR SHEETS.

SPECIFICATION forming part of Letters Patent No. 773,225, dated October 25, 1904:.

Application filed March 8, 1900. Renewed February 6, 1904:. Serial No. 192,448. (No model.)

To all whom it may concern:

Be it known that I, FRANK E. ROBINSON, a citizen of the United States, residing in the city of New York, county and State of New York, have made certain new and useful Improvements in Adjustable Binders for Leaves or Sheets, of which the following is a specification.

The object of my invention is to increase the scope or extent of adjustability in binders intended to receive loose leaves or sheetsin varyingquantities, and, further, to strengthen and perfect the construction of such binders.

I provide two strips, pieces, or plates, preferably of metal, to which sheets or extensions of any suitable material are hinged to constitute the two covers of the binder. The plates are adjustably connected by a' pair of crossed bars. The ends of the bars slide in slots in the plates, and there is, a lock operated by a key at the crossing-point where the two bars are hinged together so arranged that I may lock the two bars at any angle, and thus fix the two covers at any extent of separation. Aprons or strips extend toward each other to form a back. These are fixed to the edges of the plates, one for each, and a third similar strip is located in close proximity in a parallel plane, the three strips being so arranged that the covers may be separated the extent of one, two, or three of these sections, while the back is practically intact. The sheets to be bound are perforated and slitted near their edges, and 1 provide four telescoping tubes, each in three or more lengths or sliding sections. The tubes are screw-threaded at each terminal. They are divided into two pairs and screwed to each cover. By this means the leaves are retained in position when the covers are separated the maximum extent, or the binder may be contracted to a fractional part, as one-third the length of any tube, and the cover may be locked or fixed at any point intermediate the extremes named, so as to grip and hold any number of sheets.

The accompanying drawings illustrate my invention.

Figure 1 is a side view of the binder containlng loose leaves in a contracted condition. Fig. 2 shows the back of the same. Fig.3

is a view of the back of the binder when extended. Fig. 4 is a transverse cross-section at the back of the binder, showing the structure and arrangement of the adjustable parts thereof. Fig. 5 is a vertical section at the back of the binder. Fig. 6 is a horizontal section showing part of one of the covers with the slots and sockets for the adjustable connecting devices. Fig. 7 is a detail view of the terminals of the connecting devices. Fig. 8 is a section of one of the three-part telescoping tubes, and Figs. 9 and 10 show details of the locking device.

There are two plates of metal a and d. These are preferably sheet metal, forming the cover of a metal box-like structure t, Fig. at, and there is flexibly connected to each plate at 0 suitable leather-covered boards 0 and (Z to serve as covers, between which the perforated loose leaves on are placed. As shown in Fig. 4c, the plates a and b are adjustably connected by two crossed bars 10 and 11, pivoted together at the crossing-point. Transverse pins are fixed in each end of these bars, and there are slots 12 and 13, Fig. 6, located in parallel planes in each plate a and Z). The ends of the bars 10 and 11 pass into these slots, and the pins &0 take position against the under side of the metal plates, which hold the bars in position while permitting a free sliding movement to the extent of the slots or passages 12 and 13 and allowing the bars to lie flat. At the crossing-point of the bars there is a lock 14 for fixing the bars at any angle, whereby the covers are supported at any degree of separation. This lock consists of serrated surfaces 41, (shown in Figs. 5, 9, and 10,) with a screw-threaded pin 52 passing through the perforation 4:2 in bar 11 and engaging the screw-threaded opening 51 in bar 10. There is a slot 53 to receive a properlyshaped key in the end of pin 52, (seen in Figs. 2 and 3,) and by turning the key the screwthreaded pin 52 brings the serrated surfaces 11 into engagement, locking the bars 10 and 11 at any angle to hold in position any number of sheets.

An expansible back is provided, consisting of a sheet of metal 'or apron 8, fixed to the plate a, a sheet of metal or apron 2: fixed to the plate 7), and in a parallel plane outside is located a third sheet or strip w, which has its ends turned or folded around the ends of the strips .9 and 21, as shown at :11, and is also supported by the lock 14, which passes through it. s and o slide freely inside the sheet w, and s is located slightly outside the plane of o. In contracting the binder s can be made to pass the edge of o and both 8 and i) take up a position inside of w. Apron s has a slot 30 and apron 11 has a slot 31. These permit the sheets s and o to pass the projection or lock 14, as shown in Fig. 3.

The sheets m are perforated and slitted near their edges in a well-known manner, and I provide tubes or cylinders g and 7', it and 2'',

arranged in two pairs. These cylinders are in the form of telescoping tubes in three sections 20, 21, and 22 and are fixed to each plate or cover. The pair g and j have their larger ends screw-threaded at f to enter the holes iv in plate a and the pair 71 and 21 have their larger end sections 20 screwthreaded to engage screw-threaded holes in the other plate 6. I prefer to place a screwthread on the smaller end of each tubular section and provide screw-threaded apertures if; to receive them.

By the arrangement described an increased extent of adjustment is obtained and the binder is more substantial, more durable, and susceptible of wider utility than anything heretofore known, and while providing for any extent of separation between the covers to accommodate an increased number of sheets and to lock them in position firmly I may look firmly any lesser number of leaves or sheets in position.

What I claim, and desire to secure by Letters Patent, is-

1. In a binder for leaves the combination of the outsides or covers having pins upon which the leaves are threaded and means for fixing said covers at any degree of separation, consisting of crossed bars with serrated surfaces in detachable engagement.

2. In a binder for leaves the combination of two covers, pins for the leaves fixed to the covers, crossed bars having sliding connections with the covers, a back in three sections one section fixed to each cover and one section carried by said bars at their crossingpoint.

FRANK E. ROBINSON.

Vitnesses:

MARTHA R. LOCKWOOD, ANNA M. DONLEVY. 

